CVE-2024-27020High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get()
nft_unregister_expr() can concurrent with __nft_expr_type_get(), and there is not any protection when iterate over nf_tables_expressions list in __nft_expr_type_get(). Therefore, there is potential data-race of nf_tables_expressions list entry.
Use list_for_each_entry_rcu() to iterate over nf_tables_expressions list in __nft_expr_type_get(), and use rcu_read_lock() in the caller nft_expr_type_get() to protect the entire type query process.
linux_kernel >= 3.13, < 4.19.313linux_kernel >= 4.20, < 5.4.275linux_kernel >= 5.5, < 5.10.216linux_kernel >= 5.11, < 5.15.157linux_kernel >= 5.16, < 6.1.88linux_kernel >= 6.2, < 6.6.29linux_kernel >= 6.7, < 6.8.8linux_kernel = 6.9Upgrade past the affected range:
linux_kernel 6.8.8Connected by shared product, vendor, weakness, or advisory.
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